Path model showing the psychological and environmental mediators of the effect of the JUMP-in intervention on TV viewing and computer use. Note: Numbers represent unstandardised regression coefficients. Dotted lines represent non-significant associations, full lines represent significant associations. For reasons of clarity, the model does not show correlations between mediators, the associations between potential mediators at t0 and T2 and the covariates. Model fit: X2 (102)= 187.811, RMSEA= 0.037 90% CI= 0.029–0.046], CFI= 0.941, TLI= 0.916.